Gremlins in the Instrument Cluster:

So, about every 2-3 months, one of the smaller gauges (oil pressure, temp., battery) will freak out, and go all the way the right. The "check gauges" red warning light also illuminates. I will shut the engine off, and it goes away and returns to normal after I restart. This used to just happen to the oil pressure, but now it's the battery and temp as well.

I was never really that concerned as it would go back to normal, but I'm thinking it may be a more serious electrical issue. Any thought?